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Finding the Fourth Proportional to 529,622.62, 730,882.65 and 287,907.28

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Solution

The fourth proportional to 529,622.62, 730,882.65 and 287,907.28 is: 397,313.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,622.62 : 730,882.65 = 287,907.28 : x
  2. Step 2: Convert to fraction form
    529,622.62/730,882.65 = 287,907.28/x
  3. Step 3: Cross multiply
    529,622.62x = 730,882.65 × 287,907.28
  4. Step 4: Simplify right side
    529,622.62x = 210,426,435,760.69
  5. Step 5: Solve for x
    x = 210,426,435,760.69/529,622.62
  6. Step 6: Final answer
    x = 397,313.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.